ETSI TR 101 294

ETSI TR 101 294
ETSI TR 101 294 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Subjective tests on the interoperability of the Half Rate/Full Rate/Enhanced Full Rate (HR/FR/EFR) speech codecs, single, tandem and tandem free operation (GSM 06.85 version 6.0.0 Release 1997)

standard published 01/01/1999 by European Telecommunications Standards Institute

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Release 1997 update

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